Not sure what you mean by "uniformed." The airline will not send anyone to accompany you through immigration (unless you decide you need a wheelchair, which tends to get you off the plane last, but into the immigration queue first), nor can/will they do anything to get your checked baggage out any faster than it otherwise would appear. The previous posters on this thread have already given you the most relevant and useful advice. Check the times of later PHL-TPA flights, and switch to a later one if you feel the need to; otherwise hope for the best.

The speed at which you get through immigration all depends on how many other flights are landing around the same time (actual landing time, not scheduled landing time). Baggage claim at PHL tends to be very slow and this is likely to be the worst of your holdup--again, it is usually a function of the number of flights landing at the same time. Re-checking bags at PHL is very simple, and going back through security shouldn't be that bad either.