For what it's worth, the rogue gets a 2x move minor (at the cost of being off-balance) and the vanguard gets a move+attack major to allow for easier closing. I guess the balancing is that the Beacon gets the 2-space range and some non-melee abilities (heals, etc).
I do agree that the ranged do seem to have an easier time of it in general. Other games have made them much relatively squishier or made melee hit like trucks to make up for the extra hassle and the survivability concerns of always being close and being prone to getting flanked. Other options include adding a one-time 'closer' ability like a (2-3x move major encounter power).
It's also possible that the true bow in particular is just a little overtuned.
I haven't played all the Archetypes, but to some extent, there's a natural feel to doing one, then the other. You assume a stance, you buff, you get into position, then you do your big thing. The way it is set up, it would make room for abilities where you move or push back or whatnot AFTER your attack to be quite powerful.
I WOULD really love it if they were called something else, Setup and Activity or whatnot. Minor and Major action just reads in my head as Move, Minor, Standard.
If not the confirm action, then you might want to skip the 'take an action' step of the combat dialog for an action you've just taken. For example, to move you do:
1. Choose to take minor action
2. Select move
3. Selection target of your move
4. Confirm move
5. Choose to take major action (text of which is a summary of the move just taken)
I'd argue steps 1 and 5 (5 not obvious from my description) are unnecessary, given that you are obliged to take actions anyway. If you wanted to go back through the combat log to see what happened, there is a 'cancel' button on the action ribbon that can be repurposed to be a 'back' button. This may have been left in on purpose if they intend to add options like changing order of major/minor action (or there may be a multi-player option there that I'm unaware invalidating this entire comment).
(Don't know if I'm way too late to the party or if I'm in the wrong place for feedback)