First, although I do approve of the return of Bulk (the show needed more 'regular human' interaction) and the addition of Spike (Skull's son.....The need to bring him back for a cameo episode), I feel that they didn't do that good of a job with their characters. Back in the older seasons, Bulk and Skull took a more 'active' role with the rangers, the most notable being in Power Rangers in Space, where they stepped up from their Comic Relief roots and became Honorary Rangers in a sense. After that, the duo broke apart, only coming together in the 'Forever Red' episode of Wild Force. Now, Bulk is back to being the 'leftovers' of the series and not really important in the plot.....I wanted him to be just as involved with the ranges like he used to be back in the good old days.
Second, The Mega Modes. While kick-ass looking (especially Gold's) and menacing, having them gain it only while in the cockpit of the Megazord took away their 'flair.' Mega Mode could have been a very nice 'Battlizer' type deal if Saban introduced it correctly.
Third, Weapon Names/Attacks. Honestly, the only rangers I personally think got a good deal out of it would have to be Blue and Green. Hydro Bow and Forest spear sound more threatening to me than Fire Smasher or land slicer. Their attacks sounded more accurate in my opinion.
Fourth, Megazords. Honestly, I like them. I can understand the whole 'Samurai Artillery' thing because close to no one speaks Japanese over here. The attacks, names, and fusion sequences all flow together. The thing I like the best has to be the fact of how they tied in the Ebi/Lobster zord with the others, opening the episode where they all form Daikai-Shinkenoh with more understanding than in it's Shinkenger counter-part, where
Spoiler
The toys are ok, but lackluster. My only issue is that they didn't retain the origami transformation, leaving them with just the animal forms. Also looks very dull in terms of color. Then again, most Knock-Offs never look close to the same as their original counterparts.
The villains of this series have undergone a major up/downgrade in some areas. For example, Dayu and Doukoku (Master Xandred now) retain most of their counterparts styles. I think it was better off saying that Xandred drinks medicine rather than alcohol because American kids are more impressional than Japanese kids, which would lead to many kids drinking beer while imitating Xandred. Shitari kinda got the shaft in terms of names. 'Octoroo'? Seriously? That sounds like what you get when you cross a octopus with a kangaroo (odds are, if i look hard enough, I will find a picture of that on the internet). Decker/Juzo keeps his bad-asserdy as the series progresses, but I will say I like the twist they made between him and Dayu (not saying due to it's an 'assumed' spoiler and I don't want to get banned).
Overall, so far it's a good series. Still like the more serious tones that were implied in RPM, but what can you do?
That's it for now. More as the series progresses.