Can someone speak to the commutability of PHL 190 flying? (specifically from DFW).

I'm observing these comments and thinking that getting a commutable line in PHL will be an ideal way forward while marking time to let seniority build.

Background:
- I'm approaching retirement, with AA being my likely choice as DFW metro is where I'm planning to settle
- Medium term goal: DFW 737 or 320 (sounds like it is taking ~18 months to bid into one of those)

I am thinking that these may end up being the two initial choices (if the current landscape remains unchanged):
- Bid 190 PHL; bid up to 737 or 320 ~ one year mark and likely get held, stay in PHL with "senior" bidding power and G2 pay;
- Bid 737/320 as available out of the gate; likely sit reserve or junior lines in LGA/MIA until senior enough for DFW

Concern that I may have is too many people trying to work the same thing, ending up with less movement and thus getting "stuck" relatively junior in category and on reserve for most of that time. Is that likely?

Any thoughts... am I missing anything?